Weezer

Weezer is one of the greatest sell-out stories. After releasing their incredible Pinkerton album, the rest of their discography morphed into something that blended pop, indie, and rock in the worst way. Singer Rivers Cuomo peaked after their first album and didn't know how to top that effort. 

Vampire Weekend

Vampire Weekend has been hilariously dubbed "Ivy League Rock." Their music appeals to frat guys and sorority girls who want to seem cooler than they are. Though they rebranded their image with their most recent album, you can't come back from an early song like "Cape Cod Kwassa Kwassa," whatever that means.